Method for acquiring NMR data which is subject to periodic varia

Details Method for acquiring NMR data which is subject to periodic varia Method for acquiring NMR data which is subject to periodic varia

1987-05-26

1988-06-14

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

047514620

ABSTRACT:
A method for reducing image artifacts due to signal variations in the course of examining a subject using nuclear magnetic resonance (NMR) techniques includes the acquisition of NMR data for imaging the object. The NMR data is composed of a number of views. The acquisition of each view includes the implementation of a pulse sequence to generate an NMR signal and application of a magnetic gradient along at least one dimensional axis of the object. A gating technique is used to define a window during a portion of each respiratory cycle and NMR data is acquired only during each window. A view ordering technique is employed during the data acquisition by altering the magnitude of a field gradient in a nonmonotonic manner.

REFERENCES:
patent: 4567893 (1986-02-01), Charles et al.
patent: 4614195 (1986-09-01), Bottomley
patent: 4616180 (1986-10-01), Compton
patent: 4663591 (1987-05-01), Pelc et al.
patent: 4682110 (1987-07-01), den Boef
patent: 4706026 (1987-11-01), Pelc et al.
U.S. Application Ser. No. 766,842, filed Aug. 16, 1985, "A Method for Reducing Image Artifacts Due to Periodic Signal Variations in NMR Imaging", N. Pelc and G. Glover.

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